#define _CRT_SECURE_NO_WARNINGS 1

#include"Date.h"


bool Date::operator>(const Date& d)
{
	if (_year > d._year)
	{
		return true;
	}
	else if (_year == d._year)
	{
		if (_month > d._month)
		{
			return true;
		}
		else if (_month == d._month)
		{
			return _day > d._day;
		}
	}
	return false;
}


//d1 >= d2
bool Date::operator>=(const Date& d)
{
	return *this > d || *this == d;
}

//d1 < d2
bool Date::operator<(const Date& d)
{
	return !(*this >= d);
}

//d1 <= d2
bool Date::operator<=(const Date& d)
{
	return !(*this > d);
}

bool Date::operator==(const Date& d)
{
	return _year == d._year
		&& _month == d._month
		&& _day == d._day;
}

bool Date::operator!=(const Date& d)
{
	return !(*this == d);
}

//Date& Date::operator+=(int day)
//{
//	this->_day += day;
//	while (this->_day > GetMonthDay(this->_year, this->_month));
//	{
//		this->_day -= GetMonthDay(this->_year, this->_month);
//		this->_month++;
//		if (this->_month == 13)
//		{
//			this->_year++;
//			this->_month = 1;
//		}
//	}
//	return *this;
//}

Date& Date::operator+=(int day)
{
	_day += day;
	while (_day > GetMonthDay(_year, _month))
	{
		_day -= GetMonthDay(_year, _month);
		_month++;
		if (_month == 13)
		{
			_year++;
			_month = 1;
		}
	}
	return *this;
}

Date Date::operator+(int day)
{
	Date tmp = *this;
	tmp += day;
	return tmp;
}

Date& Date::operator-=(int day)
{
	assert(day > 0);

	_day -= day;

	while (_day < 0)
	{
		--_month;
		if (_month == 0)
		{
			--_year;
			_month = 12;
		}

		_day += GetMonthDay(_year, _month);
	}

	return *this;
}

Date Date::operator-(int day)
{
	Date tmp = *this;

	tmp -= day;
	return  tmp;
}